// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
using System;

namespace KnessetCore.Fetchers
{
	/// <summary>
	/// Fetches information from various sources. 
	/// </summary>
	/// <typeparam name="T">The fetchers returns this type of data.</typeparam>
	public interface IFetcher<T>
	{
		/// <summary>
		/// Fetch information and return it to the user.
		/// </summary>
		/// <returns>Fetched information. Can be null.</returns>
		/// <exception cref="FetchException">Error while trying to fetch data.</exception>
		T Fetch();
	}
}